Rolling mill



A ril 25, 1933. F. c. BIGGERT, JR., ET AL 1,905,129

ROLLING MILL 5 Sheets-Sheet 1 Filed July 6. 1928 INVENTOR 1 Lnu flwwmApril 1933- F. c. BIGGERT, JR., arm. 1,905,129

ROLLING MILL Filed July 6. 1928 5 Sheets-Sheet 2 [NVENTOR F. c. BIGGERT,JR., ET AL 29 ROLLING MILL Filed July 6. 1928 5 Sheets-Sheet 4 April 25,1933.

April 25, 1933. F. c. BIGGERT, JR., ET AL 1,905,129

ROLLING MILL Filed July 6. 1928 5 Sheets-Sheet 5 Law A Au FLORENCE C.BIGGERT, I VANIA, ASSIGNOBS TO UNITED ENGINEERING &

Patented Apr. 25, 1933 UNITED STATES PATENT OFFICE JR, GRAFTON, AND LANEJOHNSON, O1 INGRAM, PENNSYL- rou'mm'z couranx, nor rrr'rs mu"11" 1,"rmmsnvam A conrona'rron or rmnsnvmx Romaine m Application filed July 8,

This invention relates to rolling mills, and is herein illustrated inits applicability to a rolling mill comprising a pair of housingshousings without neck reductions at their,

ends, the arrangement afi'ording full strength of the rolls andpermitting rapid changes of them.

According to this invention we provide side bearings for rolls toprevent their horizontal displacement, such bearings preferably being ofthe anti-friction type. lle the side bearings may be arranged in vanousways, they are preferably pivoted on supports attached to axes orjournals whlch carry the backing rings or other backing means for theworking rolls. Provision is made in the housings for backing up the sidebearings to space and maintain them in proper position. v

In the accompanying drawings illustrating the present preferredembodiment of our invention and certain modifications thereof,

Figure 1 is an end elevation of a rolling mill having our inventionapplied thereto,

Figure 2 is a vertical section taken on the line IIII of Figure 1, suchsection being partly broken away and showing the rolls in solid lines,

Figure 3 is an end elevation to enlarged scale. partly broken away andshowing the side bearings in more detail,

Figure 4 is a detail view of the end por tion of one of the workingrolls. partly broken away and showing the end thrust bearing for theworking roll,

Figure 5 is a view corresponding generally to Figure 3 but showing amodified construction,

Figure 6 is a horizontal section taken on the line VI VI of Figure 5,

Figure 7 is a view corresponding generally to Figure 5 but showinganti-friction side bearings instead of plain bearings, and

Figure 8 is a view corresponding to Figure 7 but showing a still furthermodification.

1928 Serial no. 290,802.

The mill shown in Figures 1 to 4 inclusive, comprises housings 2connected by a unitary cap 3 and supported on shoes 4. Each housing 2has a window 5. Each window carries top and bottom cases 6 and 7 foranti-friction backing rolls or rings 8. Each ring 8 runs on a rollerbearing 9 carried bya pin 10. The bottom cases 6 are supported on convexbuttons 11, and the upper cases 7 are carried by screws 12. The bottomsof the screws are convexed so as to make a ball and socket joint withthe cases. Collars 13 are provided sothat as the screws are raised thecases 7 will be raised correspondingly.

The cases 6 and 7 fit in the window 5 so that sidewise movement, as themill is viewed in Figure 1, is prevented; but endwise movement, as themill is viewed in-Figure 2, is permitted within a limited range. Plates14 are secured to the housings alongside the window so as to limit suchmovement. v

The rings 8 rovide anti-friction backing for working ro ls 15 extendingthrough the housings and between the windows. The working rolls are notreduced in diameter at the end portions where they are engaged by therings 8. ,On the contrary the rings bear on the roll bodies.

The construction employed permits the anti-friction backing rolls forthe working rolls to adapt themselves to any flexing of the workingrolls under load so that the full efliciency of the anti-frictionbearings is always obtained.

Sidewise movement of the working rolls is prevented by side bearingscarried by the cases 6 and 7. These are shown in detailin Figures 1 and3. Each working roll is provided at each end with a pair of sidebearings indicated generally by the reference characters 16 and 17. Eachside bearing 16 comprises a bracket 18 pivotally mounted on a pin 19carried by the case 6 or 7 depending on whether the side bearing is forthe top or bottomworking roll. Each bracket 18 carries a roller bearing20 engaging the side of the working roll 15. The bracket is fur therprovided with a shoe'21 engaging the inner face of the window 5. isarran ement insures that the roller bearing 20 which constitutes oneside bearing member for the working roll will always be properlypositioned, will adjust itself automatically with the movements of thecase 6 or 7 upon which it is supported, and in the case of the upperroll, will be raised or lowered as the screws 12 are operated.

The side bearing 17 is similar to the side bearing 16 in many respectsand similar parts have been given the same reference character with an asuifixed thereto. It differs from the bearing 16 in that it isadjustable toward or away from the axis of the Working roll. It isbacked up by a pin 22 extending through an opening 23 in the housing.The pin 22 is'threaded through a block 24 carried in a T slot 25 in theouter face of the housing and is provided with a squared head 26 bywhich it may be rotated so as to move the roller bearing 20a toward oraway from the working roll, thus providing the desired nicety ofadjustment.

The pin 22 bears against a face 27 on the bracket 18a of suflicient sizeto make certain that pressure from the pin 22 will be communicatedthrough the bracket 18a to the roller bearing 20a within the range ofvertical adjustment of the upper roll.

One block 24 sulfices for the pins 22 for both the upper and lower sidebearings. The two pins carry washers 28 which lie over the T slot 25 andare engaged by lock nuts 29.

The side bearings 17, like the side bearings 16, are free to move withthe cases on which they are mounted, the ends of the pins 22 bearingagainst smooth faces on the brackets 18a.

The spacing of the working rolls is obtained by wood plugs 30 carried bysleeves 31, which are in turn mounted on rods 32 projecting through thehousing, and are threaded through the blocks 24. Lock nuts 33 areprovided and the heads of the rods 32 are s uared as indicated at 34 soas to permit 0 the proper adjustment of the plugs 30 being made.

The working rolls 15 are provided with the usual Wobbler connection 36for driving. Endwise movement of the working rolls is 50 prevented bythrust bearings shown in Figures 1, 2 and 4. Each working roll has areduced end portion 37 on which are mounted thrust rings 38 held inspaced relation by a bearing sleeve 39. A cap 40 fits over the 55 end ofthe reduced portion 37 and is held in place by a nut 41 on a stud 42which is screwed. to the end of the roll.

The thrust rings 38 and the bearing sleeve 39 engage a cross arm 43extending across the G0 window 5 and held in place by studs 44. The arm43is bored to fit over the bearing sleeve 39 and when the parts areassembled, endwise movement of the working roll is prevented. Theopenings through which the 65 studs 44 extend are sufliciently large topermit of vertical adjustment of the rolls within the desired range.

Figure 5 shows a modified construction wherein parts corresponding tosimilar parts in Figures 1 to'4 have been given the same referencecharacter with a b suflixed thereto. In this form of the invention thework ing rolls 155, instead of havin side bearings supported from thecasings 6% and 76, have side hearings in the form of blocks havingrenewable bearing faces 51 thereon and supported by backing screws 52.The backing screws have dog points 53 engaging recesses in the blocks 50and are threaded through nuts lying in recesses in the housing and 11-lustrated in dotted lines. The blocks 50 for the bottom roll aresupported on spreader blocks 55 lying on the case 66, and the spacebetween the blocks 50 for the top and bottom rolls is filled with theroll spreader plug 30b. This plug is provided with a metal backing block56 which in turn is backed by a rod 57 extending through the housing andthreaded so as to permit of adjustment.

In this form of the invention the end thrust is prevented by an endthrust hearing 58 fitting in slots 59 on brackets 60 secured to thehousing.

The modification illustrated in Figure 7 is similar to that of Figures 5and 6 except that instead of plain brasses 51 roller bearlngs 61 areprovided. In this form of the invention top blocks 62 are provided so asto insure that all of the s de hearings will be held in proper verticalrelation to the working rolls and will not be displaced vertically whenunder load.

Figure 8 shows a structure similar to Figure 7 except that each bearingblock 500 is provided with two roller bearings 63. With this arrangementthe tendency of the blocks .to move up or down under load is elim nated.

Our invention provides a simple and elfective side bearing for the rollsof a rolling mill wherein all parts may be readily adjusted or renewedwhen necessary. The entire mechanism is simple and does not interferewith removal and replacement of the rolls. If the rolls were mater allyreduced in diameter at the ends the problem of roll removal would becomplicated considerably by the presence of the side bearings, but withour structure roll changes may be very readily made. We have describedand illustrated a preferred embodiment of the invention, but it will beunderstood that it is not limited to the form shown, as it may beotherwise embodied within the scope of the following claims.

We claim 1. A rolling mill comprising a working roll, a backing roll, asupport for the backing roll, and side thrust bearing rollers for theworking roll mounted on the backing roll support.

2. A rolling mill comprising a working roll, a backing roll, the backingroll being adjustable, and side thrust bearing rollers for the workinroll so mounted as to be adjustable with the backing roll.

3. A rolling mill comprising a working roll, a bearing member therefor,the bearin member being so mounted as to adjust itsel to flexure of theworking roll, and a side Ehrust member mounted on the bearing mem- 4. Arolling mill comprising a housing, a working roll, a bearing membertherefor, the bearing member being carried by the housing in such mannerthat it mag adjust itself to the working roll, a side t rust membermounted on the bearing member, and a backing tor the side thrust membercarried by the housing and arranged to permit of the side thrust membermoving with the bearing member.

5. A rolling mill comprising a housing, a plurality of working rollsdisposed in the housing, cases slidingly mounted in the housing, backingrolls for the working rolls journalled in the cases, brackets pivoted onthe cases. and side rolls journalled in the brackets and disposed inengagement with the sides of the end portions of the working rolls forlaterally supporting them.

6. A rolling mill comprising a housing, a

plurality of working rolls disposed in the housing. cases slidinglymounted in the housing, backing rolls for the working rolls journalledin the cases, brackets ivoted on the cases, side rolls journalled in t ebrackets and disposed in engagement w th the sides of the end ortions ofthe working rolls, and adjustable means in the housing in engagementwith the brackets for adjustlng the position of the side rolls tolaterally support the working rolls.

7. A rolling mill comprising a working roll, a bearing member therefor,the bearing member being pivotally mounted so as to adjust itself tofiexure of the working roll and a side thrust member mounted on theearin member.

n testimony whereof we have hereunto set our hands.

FLORENCE C. BIGGERT, JR. LANE JOHNSON.

